15720140

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1867}}^1$

素因数の和:2297

約数の個数: 24

約数和(自身を含む): 33108432

約数和(自身を除く): 17388292

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 1867, 2105, 3734, 4210, 7468, 8420, 9335, 18670, 37340, 786007, 1572014, 3144028, 3930035, 7860070, 15720140]

約数ペア:

[(1, 15720140), (2, 7860070), (4, 3930035), (5, 3144028), (10, 1572014), (20, 786007), (421, 37340), (842, 18670), (1684, 9335), (1867, 8420), (2105, 7468), (3734, 4210)]